One day this guy was sitting at this bar in Chicago and looks over and sees this guy that looks exactly like him. He says to the guy, "Hey you look just like me!"
The other man agrees and asks, "Where are you from?"
The first guy answers, "Chicago."
"Me too!" says the second guy, "What street do you live on?"
"Forty-Ninth Street," answers the first guy.
"Me too!" says the second guy, becoming increasingly excited. "What's your address?"
"Me too! Wow, this is incredible! What are your parents' names?"
"John and Cathy," says the first guy.
"Me too!" shouts the second guy. "I wonder if we're related!?"
Meanwhile, the bartenders are changing shifts and the guy coming on asks if anything is new.
"No," says the first bartender, "just the Smith twins, drunk again."